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Solar Cell

Scientists have successfully used gallium indium phosphide solar cells to generate electri...

Although solar cells are proving indispensable for powering things such as electronic sensors on dry land, sensors located underwater have typically had to rely on batteries, or electricity piped in from photovoltaic panels situated above the surface. That could be changing, however, as scientists from the U.S. Naval Research Laboratory have recently developed functioning underwater solar cells.  Read More

The solar-powered Son-X Octavia attaches to any swing and gives audio cues to encourage ki...

It's hard to believe how many classic children's toys are getting modern makeovers these days - from the Etch A Sketch to toy helicopters to footballs - and now it looks like even the playground swing set is getting a slight upgrade with the Son-X Octavia. When attached to any swing, the Son-X will play different sound bites depending on how high or long a child swings, encouraging them to go higher.  Read More

A new, stable dye-sensitized solar cell developed at Northwestern University promises to b...

Solar power is up there as the quintessential clean energy and there’s a race worldwide to develop better solar cells to overcome current challenges related to cell efficiency, manufacturing costs, durability and materials, among other things. One of the latest developments in the sector comes from Northwestern University where researchers have developed a stable dye-sensitized solar cell that may one day prove cheaper than silicon-based cells.  Read More

A new efficiency record of 8.6 percent for graphene solar cells using graphene doped with ...

Doping graphene with trifluoromethanesulfonyl-amide (TFSA) has enabled researchers at the University of Florida (UF) to set a new efficiency record for graphene solar cells. While the record-breaking efficiency of 8.6 percent is well short of the efficiencies seen in other types of solar cells, it is a big improvement over previous graphene solar cells that saw efficiencies ranging up to 2.9 percent. The development provides hope for cheaper, durable graphene solar cells in the future.  Read More

A nanowire sporting tendrils of nanoparticles, which greatly add to its surface area

Higher-density batteries, more efficient thin-film solar cells, and better catalysts may all soon be possible, thanks to a new technique that allows nanowires to be “decorated” with nanoparticles. Using the novel technology, scientists from Stanford University have been able to festoon the outside surfaces of nanowires with intricate chains of metal oxide or noble metal nanoparticles, thereby drastically boosting the effective surface area of the nanowires. Other researchers have previously tried to achieve the same end result, but apparently never with such success.  Read More

Heliatek has set a world record efficiency with its latest organic solar technology

German solar technology specialist Heliatek has set a new benchmark for the efficiency of organic solar cells. In independent tests, a new world record efficiency of 10.7 percent was achieved for the company's latest tandem organic photovoltaic (OPV) cells ... and 15 percent may be just a few years away.  Read More

The liquid solar cells comprising solar nanocrystal arounf four nanometers in size applied...

Scientists at the University of Southern California (USC) have developed technology to cheaply produce stable liquid solar cells that can be painted or printed onto clear surfaces. The technology relies on solar nanocrystals that are around four nanometers in size - meaning you could fit more than 250 billion on the head of a pin. Their size allows them to be suspended in a liquid solution so they could be printed like a newspaper. The downside, commercialization of this technology is still years away.  Read More

Dow Solar is rolling out its new POWERHOUSE Solar Shingles in northern California and cent...

Installing photovoltaic panels is certainly the most common method of generating solar power on a rooftop, and in fact many people might think it’s the only method. There is, however, an alternative – photovoltaic shingles. It makes sense, when you think about it ... why install weatherproof shingles and solar panels separately, if you could get one thing that combined both? Although there aren’t many manufacturers offering such products just yet, this month Dow Solar made its POWERHOUSE Solar Shingles available to consumers in northern California and central Texas.  Read More

The record-breaking Alta Devices solar cell (Photo: Joe Foster, Alta Devices)

When you think of a solar cell, you probably think of something designed to absorb as much sunlight as possible. What you probably don't think of is something that is also capable of emitting light. Nonetheless, that’s exactly what a new prototype device designed more like an LED does, and it recently set an efficiency record for flat-plate single junction solar cells.  Read More

University of Sydney researchers have developed a “photochemical upconversion” technique t...

While the overall efficiency of conventional silicon solar cells has continued to improve in recent years, the technology faces a natural theoretical limit at around 33%. This is because the laws of physics prevent the cells from absorbing photons below a certain energy level, meaning that this low-energy light cannot be converted into electricity is simply lost. Now researchers have found a way join two energy-poor red photons to form a single energy-rich yellow photon, allowing the harvesting of this part of the spectrum currently unused by single p-n junction crystalline silicon solar cells, and potentially enabling a record-breaking efficiency of 40%.  Read More

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